Method and device for overvoltage protection in dual-voltage vehicle electrical systems

摘要

A method and a device are for overvoltage protection in dual-voltage vehicle electrical systems that have a different level of voltage. A switching element is positioned in at least one branch of the vehicle electrical system on the higher voltage level, and a voltmeter unit is located in the vehicle electrical system on the lower voltage level. The switching element is controlled by the voltmeter.